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An autonomous sense-and-avoid navigation system keeps the drone?from running into other objects on the way to its destination, at an altitude of up to 400 feet.?Researchers at the Massachusetts Institute of Technology showed off a sense-and-avoid system last month, but that one was designed to handle obstacles at a mere 30 mph?– half the speed that’s built into Amazon’s specs.

An express rail will be built to link Beijing's new airport with Xiongan New Area in neighboring Hebei province, providing convenience for residents in the new area to take flights in the capital, a top official in Hebei said on Tuesday.

An Yanpeng, director of the Engineering Department of the Beijing-Tangshan Railway Co Ltd, said the majority of the project's basic facilities supporting the railway between Baodi district to Tangshan has been completed.

An expert panel advising the Centers for Disease Control and Prevention last week overwhelmingly recommended that the first doses go to the nation's 21 million healthcare workers and 3 million residents of long-term care facilities. They fall into what has been called Phase 1a of distribution of the vaccine, which Pfizer developed with BioNTech.

An aviation veteran, his hands-on work style and down-to-earth personality are part of industry folklore. With foresight, enterprise and enthusiasm, he has been piloting the airline for years.